Reusable liquid rocket separation device and liquid rocket

Abstract

The invention discloses a multiplex liquid rocket separation device and a liquid rocket, the multiplex liquid rocket separation device comprises a plurality of driving devices and a separation structure, the driving devices are installed on a first sub-stage support of the liquid rocket, one end of the separation structure is connected with the first sub-stage support of the liquid rocket, and the other end of the separation structure is fixedly connected with a second sub-stage support of the liquid rocket. The driving device is used for driving the end, close to the first liquid rocket substage support, of the separation structure to rotate in the circumferential direction, and the end, close to the second liquid rocket substage support, of the separation structure is pulled to move in the axial direction, so that the separation structure and the first liquid rocket substage support are rapidly separated and unlocked. And the unlocked separation structure is separated from the liquid rocket first sub-stage support along with the liquid rocket second sub-stage support, so that rapid separation between the adjacent sub-stages of the liquid rocket is completed. The device facilitates rapid separation between rocket sub-stages, is stable in structure, is safe and reliable, and improves the recovery reliability and efficiency of each sub-stage of the rocket.

Description

Technical Field

[0001] The present invention relates to the field of aerospace technology, and in particular, to a reusable liquid rocket separation device and a liquid rocket. Background Art

[0002] With the rapid development of the aerospace industry, various technologies involved in the rocket field have also advanced by leaps and bounds. Rocket recovery is an important way to reduce the cost of rocket launches. When recovering a rocket, it is usually necessary to separately recover each stage of the rocket. In order to ensure the safe recovery of each stage, a separation device needs to be installed at the connection part of each stage of the rocket. Currently, the main separation device is an explosive bolt structure. However, the storage, transportation, and management of explosive bolts are complex. At the same time, the high impact generated during the explosive separation process causes damage to the on-board equipment, thus affecting the safe recovery of each stage of the rocket.

[0003] There is an urgent need to provide a reusable liquid rocket separation device that facilitates the rapid separation between rocket stages, has a stable structure, and is safe and reliable. Summary of the Invention

[0004] The purpose of the present invention is to provide a reusable liquid rocket separation device that facilitates the rapid separation between rocket stages, has a stable structure, is safe and reliable, and improves the reliability and efficiency of the recovery of each stage of the rocket.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows: One aspect of the present invention provides a reusable liquid rocket separation device, which includes a plurality of driving devices and a separation structure. Among them, the driving devices are installed on a support of one stage of the liquid rocket, one end of the separation structure is connected to the support of one stage of the liquid rocket, and the other end is fixedly connected to a support of the second stage of the liquid rocket. The driving device is used to drive one end of the separation structure close to the support of one stage of the liquid rocket to rotate circumferentially, so that the connection end of the separation structure with the support of one stage of the liquid rocket is unlocked, and one end of the separation structure close to the support of the second stage of the liquid rocket moves axially under the action of a pulling force, so that the separation structure is separated from the support of one stage of the liquid rocket, thereby completing the rapid separation between adjacent stages of the liquid rocket.

[0006] Further, the driving device is an electric cylinder, the electric cylinder is fixed to the support of one stage of the liquid rocket by bolts, and the telescopic end of the driving device is used to abut against the separation structure to drive the separation structure to rotate circumferentially along the surface of the support of one stage of the liquid rocket.

[0007] Further, the support of one stage of the liquid rocket is circumferentially and uniformly provided with long strip channels for matching the movement of one end of the separation structure close to the support of one stage of the liquid rocket.

[0008] Further, the separation structure includes a rotating block, a first connecting cylinder, a second connecting cylinder, a third connecting cylinder, and a locking mechanism. Among them, The rotating block abuts against the surface of the first-stage liquid rocket support and can rotate circumferentially along the surface of the first-stage liquid rocket support. One end of the rotating block is connected to one end of the first connecting cylinder, the other end of the first connecting cylinder is connected to one end of the second connecting cylinder, the other end of the second connecting cylinder is connected to one end of the third connecting cylinder, and the other end of the third connecting cylinder is connected to the locking mechanism. The third connecting cylinder is located within the locking mechanism, and the locking mechanism is used to apply a tensile force to the third connecting cylinder to move the third connecting cylinder away from the first-stage liquid rocket.

[0009] Further, the rotating block is connected to the first connecting cylinder by bolts, the second connecting cylinder and the third connecting cylinder are connected by threads. After the first connecting cylinder and the second connecting cylinder are connected, the first connecting cylinder can rotate circumferentially relative to the second connecting cylinder.

[0010] Further, the rotating block is a cuboid structure, and at least one concave portion matching the telescopic end of the driving device is provided on the long side of the rotating block.

[0011] Further, the cross-section of the first connecting cylinder intercepted along the axial direction of the first connecting cylinder is a convex-shaped structure, and a through hole for restricting the first connecting cylinder from moving away from the third connecting cylinder is provided at the closed end of the second connecting cylinder.

[0012] Further, a lower concave portion is provided at one end of the third connecting cylinder close to the second connecting cylinder. The lower concave portion is concave away from the second connecting cylinder, and a first spring is provided in the lower concave portion. The first spring is compressively arranged in the lower concave portion and its two ends are respectively connected to the inner wall of the bottom of the lower concave portion and the end face of the housing of the corresponding locking mechanism.

[0013] Further, the locking mechanism includes a housing, a base, a guiding cylinder, and a second spring. The housing and the base form a sealed cavity and are fixed to the second-stage liquid rocket support by bolts. The guiding cylinder is located within the cavity, the second spring is stretched and arranged within the guiding cylinder. One end of the second spring is connected to the inner wall of the housing away from the base, and the other end is connected to the part of the separation structure located within the cavity and the end face of the third connecting cylinder away from the second connecting cylinder.

[0014] The present invention also provides a liquid rocket, including the technical features of the reusable liquid rocket separation device described above.

[0015] A reusable liquid rocket separation device provided by an embodiment of the present invention is composed of a plurality of driving devices and a separation structure. The driving devices are installed on the first-stage bracket of the liquid rocket, one end of the separation structure is connected to the first-stage bracket of the liquid rocket, and the other end is fixedly connected to the second-stage bracket of the liquid rocket.

[0016] Through the driving of the driving devices, the end of the separation structure close to the first-stage bracket of the liquid rocket rotates circumferentially, unlocking the connection end of the separation structure and the first-stage bracket of the liquid rocket. Finally, one end of the separation structure is aligned with the long strip channel on the first-stage bracket of the liquid rocket. The end of the separation structure close to the second-stage bracket of the liquid rocket is subjected to a pulling force, driving the end of the separation structure close to the first-stage bracket of the liquid rocket to disengage from the long strip channel, causing the separation structure to separate from the first-stage bracket of the liquid rocket together with the second-stage rocket, thus completing the rapid separation between adjacent stages of the liquid rocket.

[0017] The entire reusable liquid rocket separation device facilitates the rapid separation between rocket stages, has a stable structure, is safe and reliable, and improves the reliability and efficiency of the recovery of each stage of the rocket.

[0018] It should be understood that the above general description and the following specific embodiments are only exemplary and explanatory, and cannot limit the scope claimed by the present invention. Brief Description of the Drawings

[0019] Figure 1 is a schematic cross-sectional view of the reusable liquid rocket separation device of the present invention; Figure 2 is a top view of the driving device, the long strip channel and the rotating block of the present invention; Figure 3 is a schematic view of the separation structure of the present invention; Figure 4 is a schematic view of the long strip channel of the present invention; Figure 5 is a three-dimensional view of the rotating block of the present invention; Figure 6 is a schematic cross-sectional view of the first connecting cylinder of the present invention; Figure 7 is a top view of the first connecting cylinder of the present invention; Figure 8 is a three-dimensional view of the second connecting cylinder of the present invention; Figure 9 is a top view of the bearing of the present invention.

[0020] Reference Signs: 1 Driving Device 2 Separation Structure 3 First-stage Bracket of the Rocket 4 Second-stage Bracket of the Liquid Rocket 5 Long Strip Channel 6 Rotating Block 7 First connecting cylinder 8 Second connecting cylinder 9 Third connecting cylinder 10 Recess 11 Lower recess 12 Housing 13 Base 14 Guide cylinder 15 Second spring 16 Adjustment opening 17 Bearing Detailed implementation manners

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] Among them, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0024] The special term "exemplary" herein means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" herein need not be construed as being superior to or better than other embodiments.

[0025] In addition, in order to better illustrate the present application, numerous specific details are given in the following detailed implementation manners. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some instances, methods, means, elements and circuits well-known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0026] Such as Figure 1 , Figure 2 and Figure 5As shown in the figure, a reusable liquid rocket separation device includes a plurality of driving devices 1 and a separation structure 2. Among them, the driving devices 1 are installed on the first-stage support 3 of the liquid rocket, one end of the separation structure 2 is connected to the first-stage support 3 of the liquid rocket, and the other end is fixedly connected to the second-stage support 4 of the liquid rocket.

[0027] The driving device 1 is used to drive one end of the separation structure 2 close to the first-stage support 3 of the liquid rocket to rotate circumferentially, unlocking the connection end of the separation structure with the first-stage support of the liquid rocket. One end of the separation structure 2 close to the second-stage support 4 of the liquid rocket is subjected to a tensile force and moves axially, so that the separation structure 2 is separated from the first-stage support 3 of the liquid rocket, thereby completing the rapid separation between adjacent stages of the liquid rocket.

[0028] Specifically, the present invention provides a reusable liquid rocket separation device, which is composed of a plurality of driving devices 1 and a separation structure 2. The driving devices 1 are installed on the first-stage support 3 of the liquid rocket, one end of the separation structure 2 is connected to the first-stage support 3 of the liquid rocket, and the other end is fixedly connected to the second-stage support 4 of the liquid rocket.

[0029] By driving the driving device 1 to drive one end of the separation structure 2 close to the first-stage support 3 of the liquid rocket to rotate circumferentially, finally aligning one end of the separation structure 2 with the long strip channel 5 on the first-stage support 3 of the liquid rocket. One end of the separation structure 2 close to the second-stage support 4 of the liquid rocket is subjected to a tensile force, driving the separation structure 2 (the end of the separation structure close to the first-stage support of the liquid rocket) to disengage from the long strip channel 5, so that the separation structure 2 is separated from the first-stage support 1 of the liquid rocket together with the second stage of the rocket, thereby completing the rapid separation between adjacent stages of the liquid rocket. The entire reusable liquid rocket separation device facilitates the rapid separation between the stages of the rocket, and has a stable structure, is safe and reliable, and improves the reliability and efficiency of the recovery of each stage of the rocket.

[0030] Such as Figure 1 , Figure 2 and Figure 3As shown in the figure, in order to accurately control the telescopic amount of the driving device 1 and improve the control accuracy, for example, the driving device 1 is an electric cylinder. To ensure that the electric cylinder is firmly fixed, for example, the electric cylinder is fixed to the first-stage support 3 of the liquid rocket by bolts. In addition, the first-stage support 3 of the liquid rocket is also provided with a fixed baffle matching the electric cylinder housing to prevent the electric cylinder housing from moving during the operation of the electric cylinder, which affects the accuracy of the electric cylinder. The telescopic end of the driving device 1 is used to abut against the separation structure 2 to drive the separation structure 2 to rotate circumferentially along the surface of the first-stage support 3 of the liquid rocket. The circumferential movement of the rotating block 6 is driven by the movement of the telescopic end of the driving device 1, so that the rotated rotating block 6 is just located above the long strip channel 5. To prevent the rotating block 6 from crossing the long strip channel 5 during rotation (a part of the rotating block is located on the surface of the first-stage support of the liquid rocket connected to the long strip channel), for example, a baffle is provided on the long side of the long strip channel 5. One end of the baffle is welded to the surface of the first-stage support 3 of the liquid rocket, and the other end extends to the side away from the surface of the first-stage support 3 of the liquid rocket. It should be particularly noted that the end face of the baffle close to the long strip channel 5 is in the same plane (in the vertical direction) as the inner wall of the corresponding long strip channel.

[0031] It should be noted that, in order to facilitate the detachment of the rotating block 6 from the first-stage support 3 of the liquid rocket, for example, the first-stage support 3 of the liquid rocket is evenly distributed circumferentially with long strip channels 5 for matching the movement of the end of the separation structure 2 close to the first-stage support 3 of the liquid rocket. The rotated rotating block 6 is just located above the long strip channel 5. Under the action of the spring tension, the rotating block 6 slides out along the inner side of the long strip channel 5 together with the first connecting cylinder 7 (the part located in the long strip channel). The number of long strip channels 5 is greater than the number of rotating blocks 6. The setting of multiple long strip channels 5 can, on the one hand, reduce the weight of the first-stage support 3 of the liquid rocket, and on the other hand, the installation of the rotating block 6 can be adjusted in time according to the position of the long strip channel 5, improving the installation efficiency.

[0032] In this embodiment, the number of long strip channels 5 is N times that of the rotating blocks 6, where N is a natural number greater than 1.

[0033] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown in the figure, for the convenience of installation and at the same time facilitating the axial adjustment of the separation structure 2, for example, the separation structure 2 includes a rotating block 6, a first connecting cylinder 7, a second connecting cylinder 8, a third connecting cylinder 9 and a locking mechanism.

[0034] Specifically, the rotating block 6 abuts against the surface of the first-stage support 3 of the liquid rocket and can rotate circumferentially along the surface of the first-stage support 3 of the liquid rocket (the centers of the rotating block 6 and the long strip channel 5 are located on the axis of the first connecting cylinder 7). One end of the rotating block 6 is connected to one end of the first connecting cylinder 7, the other end of the first connecting cylinder 7 is connected to one end of the second connecting cylinder 8, the other end of the second connecting cylinder 8 is connected to one end of the third connecting cylinder 9, and the other end of the third connecting cylinder 9 is connected to the locking mechanism.

[0035] The third connecting cylinder 9 is located inside the locking mechanism, and the locking mechanism is used to apply a tensile force to the third connecting cylinder 9 to move the third connecting cylinder 9 away from the first stage of the liquid rocket.

[0036] In addition, to facilitate the installation and disassembly of the separation structure 2, for example, the rotating block 6 and the first connecting cylinder 7 are connected by bolts, and the second connecting cylinder 8 and the third connecting cylinder 9 are connected by threads. To facilitate the rotation of the first connecting cylinder 7, for example, the first connecting cylinder 7 can rotate circumferentially relative to the second connecting cylinder 8, and the first connecting cylinder 7 can axially move inside the second connecting cylinder 8. In addition, to make the connection between the second connecting cylinder 8 and the third connecting cylinder 9 closer and more firmly fixed, a plurality of radially arranged locking bolts are evenly provided circumferentially at the overlapping part of the threaded connection between the second connecting cylinder 8 and the third connecting cylinder 9. After the locking bolts sequentially penetrate through the outer walls of the second connecting cylinder 8 and the third connecting cylinder 9, the second connecting cylinder 8 and the third connecting cylinder 9 are fixedly connected.

[0037] In addition, to ensure the stable structure of the rotating block 6, for example, the outer shape of the rotating block 6 can be a cuboid. Additionally, to quickly rotate the rotating block 6 to the upper part of the long strip channel, for example, both ends of the rotating block 6 are semi-circular convex platform structures (the cross-section is semi-circular). The setting of the semi-circular convex platform structure can reduce the volume of the rotating block 6 inserted into the long strip channel 5, improve the rotation speed of the rotating block 6, save the adjustment time, and facilitate the rapid separation between subsequent rocket sub-stages. To prevent slipping (sliding along the long side surface of the rotating block) when the telescopic end of the driving device 1 contacts the rotating block 6 and affect the movement accuracy of the rotating block 6, for example, at least one recess 10 matching the telescopic end of the driving device 1 is provided on the long side of the rotating block 6. The telescopic end of the driving device 1 is in close contact with the inner wall of the recess 10, so that the recess 10 limits the telescopic end of the driving device 1, preventing the telescopic end of the driving device 1 from sliding on the surface of the rotating block 6 and enabling the acting force of the driving device 1 to act quickly on the rotating block 6. In addition, the design of the recess 10 also saves the rotation time of the rotating block (the moving displacement distance when the driving device 1 pushes the rotating block 6 to rotate directly above the long strip channel becomes shorter), greatly improving the response rate of the rotating block 6. In practical applications, to precisely adjust the rotating block 6, for example, driving devices 1 are respectively arranged at both ends of the rotating block 6, and the number of recesses on the long side of the rotating block 6 is two. The two driving devices can be started simultaneously to enable the circumferential rotation of the rotating block 6. In addition, the setting of the two driving devices 1 plays a redundant role. When one of the driving devices 1 fails to work, the other driving device 1 can be started to ensure the circumferential rotation of the rotating block 6. In this embodiment, the telescopic end of the driving device 1 has a telescopic margin (when the telescopic end is compressed to the limit position, the rotating block is just directly above the long strip channel), which does not affect the telescopic movement of the telescopic end of the other driving device 1.

[0038] To facilitate the rapid rotation of the rotating block 6 while preventing the radial movement of the rotating block 6, for example, a slideway (the slideway is a curved convex part) is provided on the surface of the first-stage support 3 of the liquid rocket, and a groove matching the slideway is provided at the bottom of the rotating block 6. The groove and the slideway are arranged in a concave-convex fit. The groove is similar to a guide groove, and the slideway is similar to a guide rod. The two cooperate with each other to prevent the radial movement of the rotating block. On the other hand, it can also reduce the direct contact area between the rotating block 6 and the surface of the first-stage support 3 of the liquid rocket (there is a gap between the rotating block 6 and the surface of the first-stage support 3 of the liquid rocket), reduce the frictional force, facilitate the rapid movement of the rotating block 6, and is conducive to the rapid separation of subsequent rocket sub-stages.

[0039] In the same embodiment, for the convenience of connecting the first connecting cylinder 7 and the second connecting cylinder 8 and facilitating the circumferential rotation of the first connecting cylinder 7, for example, the cross-section of the first connecting cylinder 7 intercepted along its axial direction is a convex-shaped structure, and the closed end of the second connecting cylinder 8 is provided with a through hole for limiting the movement of the first connecting cylinder 7 away from the third connecting cylinder 9. The small end of the convex-shaped structure passes through the through hole and the long strip channel 5 and is used to connect with the rotating block 6. The end face of the large end of the convex-shaped structure close to the small end side (the upper end face of the large end) is in close contact with the corresponding through hole end face, which can effectively limit the movement of the first connecting cylinder 7 away from the third connecting cylinder 9 and facilitate installation and disassembly at the same time.

[0040] As Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 shown, for the convenience of installing and fixing the rotating block 6 and the first connecting cylinder 7, the rotating block 6 is fixed on the first connecting cylinder 7 by bolts. For the convenience of circumferentially adjusting the rotating block 6, for example, an adjusting opening 16 is provided on the second connecting cylinder 8, and a gear is provided on the circumferential surface of one end of the first connecting cylinder 7 located inside the second connecting cylinder 8 (the gear is fixedly connected to the first connecting cylinder 7). When the rotating block 6 is installed on the first connecting cylinder 7, the rotation of the gear is adjusted through a plug-in to adjust the circumferential rotation position of the rotating block 6 so that the rotating block 6 is located on the outer surface of the long strip channel 5 (i.e., the rotating block passes through the long strip channel), and continue to adjust so that the upper end of the first connecting cylinder 7 located outside the long strip channel 5 supports the rotating block 6, and the rotating block 6 is fixed on the first connecting cylinder 7 by a rotating bolt at the other end of the first connecting cylinder 7 (a screw hole matching the bolt is provided at this end). The plug-in has an L-shaped structure, one end is radially inserted into the part between adjacent gears, and the other end is arranged on the outer wall of the second connecting cylinder 8.

[0041] As Figure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 9 shown, to improve the connection strength between the first connecting cylinder 7 and the second connecting cylinder 8 and avoid bending or breaking at the externally connected part of the first connecting cylinder 7 and the second connecting cylinder 8 (during the flight of the rocket, especially when tilted, the forces on the first connecting cylinder 7 and the second connecting cylinder 8 change), for example, a bearing 17 is installed at the externally connected part of the first connecting cylinder 7 and the second connecting cylinder 8. The installation of the bearing 17 increases the radial support of the first connecting cylinder 7 and avoids bending of the first connecting cylinder 7. In addition, to prevent the bearing 17 from sliding along the surface of the first connecting cylinder 7 due to vibration, for example, fixing parts (cuboid fixing strips) are welded around the bearing 17, and the fixing parts are fixed on the second connecting cylinder 8 (upper end face) by bolts.

[0042] AsFigure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 9 As shown, in order to ensure that the third connecting cylinder 9 quickly moves away from the second connecting cylinder 8, for example, a concave portion 11 is provided at one end of the third connecting cylinder 9 close to the second connecting cylinder 8. The concave portion 11 is concave away from the second connecting cylinder 8, and a first spring is provided in the concave portion 11. The first spring is compressively arranged in the concave portion 11 and its two ends are respectively connected to the inner wall of the bottom of the concave portion 11 and the end face of the housing of the locking mechanism corresponding to the concave portion 11 (the end face corresponding to the base of the concave portion). By providing the first spring, the elastic force on the third connecting cylinder can be increased (the elastic force away from the first stage of the rocket is increased), so that the second connecting cylinder 8, the first connecting cylinder 7 and the rotating block 6 move towards the second stage of the rocket, which helps the quick separation between the liquid rocket stages.

[0043] Specifically, in this embodiment, the locking mechanism includes a housing 12, a base 13, a guide cylinder 14 and a second spring 15. In order to facilitate the fixation of the housing 12 and the base 13, for example, the housing 12 and the base 13 form a sealed cavity and are fixed to the support 4 of the second stage of the liquid rocket by bolts. In order to enable the quick separation between the liquid rocket stages, for example, the guide cylinder 14 is located in the cavity, and the second spring 15 is stretched (the spring is in an extended state) and arranged in the guide cylinder 14. One end of the second spring 15 is connected to the inner wall of the housing 12 away from the base 13, and the other end is connected to the part of the separation structure 2 located in the cavity and the end face of the third connecting cylinder 9 away from the second connecting cylinder 8. By driving the device 1 to drive the end of the separation structure 2 close to the support of the first stage of the liquid rocket to rotate circumferentially, the end of the separation structure 2 is quickly aligned with the long strip channel 5. The end of the separation structure close to the support 4 of the second stage of the liquid rocket is subjected to the pulling force of the second spring, so that the rotating block 6, the first connecting cylinder 7, the second connecting cylinder 8 and the third connecting cylinder 9 move axially (the rotating block and part of the first connecting cylinder quickly slide out of the long strip channel), so that the separation structure 2 is separated from the support 3 of the first stage of the liquid rocket along with the second stage of the liquid rocket, and the quick separation between adjacent stages of the liquid rocket is completed.

[0044] In addition, in order to ensure the firm fixation of the guide cylinder 14, for example, one end of the guide cylinder 14 is fixed to the housing 12 away from the base, and the other end is connected to the inner wall of the housing through an annular transition plate. The cross-section of the annular transition plate axially intercepted is an isosceles trapezoid, the large end is welded to the inner wall, and the small end is welded to the outer circumferential surface of the guide cylinder 14. In order to ensure the safe and stable movement of the third connecting cylinder 9 and avoid scratching the guide cylinder 14 by the third connecting cylinder 9, for example, an arc is formed at the transition part between the outer wall and the end face of the third connecting cylinder 9 away from the base, and an arc is formed at the transition part where the small end is connected to the guide cylinder 14.

[0045] The present invention also provides a liquid rocket, which includes the technical features of the above-mentioned reusable liquid rocket separation device.

[0046] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A multiplexed liquid rocket separation device, characterized in that It includes multiple driving devices and a separation structure. Among them, the driving devices are installed on the first-stage bracket of the liquid rocket, one end of the separation structure is connected to the first-stage bracket of the liquid rocket, and the other end is fixedly connected to the second-stage bracket of the liquid rocket. The driving devices are used to drive one end of the separation structure close to the first-stage bracket of the liquid rocket to rotate circumferentially, and one end of the separation structure close to the second-stage bracket of the liquid rocket is subjected to a tensile force to move axially, so that the separation structure is quickly separated and unlocked from the first-stage bracket of the liquid rocket. After unlocking, the separation structure is separated from the first-stage bracket of the liquid rocket together with the second-stage bracket of the liquid rocket, thus completing the quick separation between adjacent stages of the liquid rocket.

2. The multiplexed liquid rocket separation device according to claim 1, characterized in that, The driving device is an electric cylinder, and the electric cylinder is fixed on the first-stage bracket of the liquid rocket by bolts. The telescopic end of the driving device abuts against the separation structure to drive the separation structure to rotate circumferentially along the surface of the first-stage bracket of the liquid rocket.

3. The reusable liquid rocket separation device according to claim 1, characterized in that Longitudinal channels for matching the movement of one end of the separation structure close to the first-stage bracket of the liquid rocket are evenly distributed circumferentially on the first-stage bracket of the liquid rocket.

4. The reusable liquid rocket separation device according to claim 1, characterized in that, The separation structure includes a rotating block, a first connecting cylinder, a second connecting cylinder, a third connecting cylinder and a locking mechanism. Among them, The rotating block abuts against the surface of the first-stage bracket of the liquid rocket and can rotate circumferentially along the surface of the first-stage bracket of the liquid rocket. The rotating block is connected to one end of the first connecting cylinder, the other end of the first connecting cylinder is connected to one end of the second connecting cylinder, the other end of the second connecting cylinder is connected to one end of the third connecting cylinder, and the other end of the third connecting cylinder is connected to the locking mechanism. Among them, the third connecting cylinder is located inside the locking mechanism, and the locking mechanism is used to apply a tensile force to the third connecting cylinder to make the third connecting cylinder move away from the first-stage of the liquid rocket.

5. The reusable liquid rocket separation device according to claim 4, characterized in that, The rotating block is threadedly connected to the first connecting cylinder, and the second connecting cylinder is threadedly connected to the third connecting cylinder. After the first connecting cylinder and the second connecting cylinder are connected, the first connecting cylinder can rotate circumferentially relative to the second connecting cylinder.

6. The reusable liquid rocket separation device according to claim 4, characterized in that, The rotating block is a cuboid structure, and at least one concave portion matching the telescopic end of the driving device is provided on the long side of the rotating block.

7. The reusable liquid rocket separation device according to claim 4, characterized in that, The cross-section of the first connecting cylinder intercepted axially along the first connecting cylinder is a convex-shaped structure, and a through hole for restricting the first connecting cylinder from moving away from the third connecting cylinder is provided at the closed end of the second connecting cylinder.

8. The reusable liquid rocket separation device according to claim 4, characterized in that, A lower concave portion is provided at one end of the third connecting cylinder close to the second connecting cylinder. The lower concave portion is concave away from the second connecting cylinder, and a first spring is provided in the lower concave portion. The first spring is compressively arranged in the lower concave portion and its two ends are respectively connected to the inner wall of the bottom of the lower concave portion and the end face of the shell of the corresponding locking mechanism.

9. The reusable liquid rocket separation device according to claim 4, wherein The locking mechanism includes a housing, a base, a guide cylinder, and a second spring. The housing and the base form a sealed cavity, and the two are fixed to the liquid rocket second stage support by bolts. The guide cylinder is located within the cavity. The second spring is disposed in the guide cylinder in a stretched manner. One end of the second spring is connected to the inner wall of the housing on the side away from the base, and the other end is connected to the part of the separation structure located within the cavity and is connected to the end face of the third connecting cylinder away from the second connecting cylinder.

10. A liquid rocket, characterized in that, Comprising the reusable liquid rocket separation device according to any one of claims 1-9.

Images